How to Repeat Each Row of a Data Frame in R Programming (Example Code)
In this article you’ll learn how to create (multiple) duplicates of each rows of a data frame in the R programming language.
Creating Example Data
data(iris) # Load data head(iris) # Head of data # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa |
data(iris) # Load data head(iris) # Head of data # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa
Example: Creating One Duplicate of Each Data Frame Row
iris_updated <- iris[rep(seq_len(nrow(iris)), each = 2), ] # Create repetitions head(iris_updated) # Head of updated data # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 1.1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 2.1 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 3.1 4.7 3.2 1.3 0.2 setosa |
iris_updated <- iris[rep(seq_len(nrow(iris)), each = 2), ] # Create repetitions head(iris_updated) # Head of updated data # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 1.1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 2.1 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 3.1 4.7 3.2 1.3 0.2 setosa